I upgrade from 6.2 to 6.4 in the last week, now i have my much tkunown in my language.sil file for proprieties like (BidiMode and Alignement) for standard and 3thd parties Delphi components, also I have strange issue always i get this error when i try to upload my file to project using translation editor Delphi ide (Nil passes as AObject in tsiProInfolist.Create).
All this issue come when i upgrade to 6.4, and the same sil file work fine under 6.2, I use 2 language (English and Arabic).
Also I find that all extended proprieties type in Arabic language are empty
Thanks for any help
NB: I use sil file with TsilangTLV

You get tkUnknown because you've created SIL file under Delphi 2009 and it uses new TypeKind for Unicode strings, which is uknown for SIL Editor which is compiled with earlier version of Delphi. This is not a problem as TsiLang will recognize the property data at run-time in such cases.
TypeKind items for non-default languages always empty as this information not needed.